agent = navigator.userAgent.toLowerCase();
version = navigator.appVersion.toLowerCase();

function showElement(elementName,switchName) {
	if ( document.getElementById(elementName) && document.getElementById(switchName) )	{
		if (document.getElementById(switchName).checked) {
			document.getElementById(elementName).style.display = "block";
		}
		if  (document.getElementById(switchName).checked == false) {
			document.getElementById(elementName).style.display = "none";
		}
	}
}

function addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != 'function'){
		window.onload = func;
	} else {
		window.onload = function() {
			oldonload();
			func();
		}
	}
}


function ProtiBotum() {
	if (document.getElementById("antibotinput")) {
		document.getElementById("antibotvalue").value = 5;
		document.getElementById("antibotinput").style.display = "none";
	}
}

function install_coupon_check()
{
	if( !document.getElementById )
		return;

	var b = document.getElementById('btn-basket-finalize');
	var codes, i, prev_codes;

	if( !b || !b.form || !b.form.elements )
		return;

	for(i=0; i < b.form.elements.length; ++i) {
		switch( b.form.elements.item(i).name ) {
			case "cart_custom[coupon]":
				codes = b.form.elements.item(i);
				break;

			case "_coupon-prev":
				prev_codes = b.form.elements.item(i);
				break;
		}
	}

	if( !codes || !prev_codes )
		return;

	var fnc = function() {
		var disabled = codes.value.length > 0
				&& codes.value != prev_codes.value;

		if( disabled == b.disabled )
			return true;

		b.disabled = disabled;

		if( !b.src )
			return true;

		if( disabled )
			b.src = b.src.replace(/\.gif$/, '_disabled.gif');
		else
			b.src = b.src.replace(/_disabled\.gif$/, '.gif');

		return true;
	}

	codes.onkeyup = codes.onchange = codes.onclick = codes.onmousedown = fnc;
}

addLoadEvent(ProtiBotum);
addLoadEvent(install_coupon_check);


//functions
function send_xmlhttprequest(callb, method, url, content, headers)
{
	var xmlhttp = (window.XMLHttpRequest ? new XMLHttpRequest : (window.ActiveXObject ? new ActiveXObject("Microsoft.XMLHTTP") : false));
	if (!xmlhttp)
	{
		return false;
	}
	xmlhttp.open(method, url);
	xmlhttp.onreadystatechange = function()
	{
		callb(xmlhttp);
	};
	if (headers)
	{
		for (var key in headers)
		{
			xmlhttp.setRequestHeader(key, headers[key]);
		}
	}
	xmlhttp.send(content);
	return true;
}

function get_obj(objid)
{
	obj_ent = document.getElementById(objid);
	if (obj_ent) {
		return obj_ent;
	}
	return null;
}

function obj_display(objid, displ)
{
	obj_ent = get_obj(objid);
	
	if (obj_ent) {
		obj_ent.style.display = displ;
		return obj_ent;
	}
}


function set_obj_value(objid, val)
{
	obj = get_obj(objid);
	if (obj)
	{
		if( obj.tagName=='input' ){
			obj.value = val;
		}else{
			obj.innerHTML = val;
		}
		return true;
	}
	return false;
}

function enable_next_button()
{
	butt = get_obj('next_butt');
	if (butt && next_butt_enabled)
	{
		butt.src = next_butt_enabled;
		butt.style.cursor = 'pointer';
		butt.disabled = false;
	}
}

function disable_next_button()
{
	butt = get_obj('next_butt');
	if (butt && next_butt_disabled)
	{
		
		butt.src = next_butt_disabled;
		
		
		butt.style.cursor = 'default';
		butt.disabled = true;
	}
}

function copy_one_to_another(source_obj_name, target_obj_name)
{
	source_obj = get_obj(source_obj_name);
	target_obj = get_obj(target_obj_name);
	
	if (source_obj && target_obj && source_obj.value.length != '')
	{
		target_obj.value = source_obj.value;
	}
}

function show_company_form(){
	switch_address_type(2)
}

function hide_company_form(){
	obj_display('billing_profile_block_head', 'none');
	obj_display('billing_profile_block', 'none');
	
	switch_address_type(1);
}

function show_billing_profile(){
	switch_address_type(3)
}

function switch_address_type(atype)
{
	addr_type = get_obj('address_type');
	
	if (addr_type) 
	{
		addr_type.value = atype;
		
		title_type = atype - 1;
		
		if (address_type_title && address_type_title[title_type])
		{
			row_head = get_obj('shipping_address_head');
			if (row_head)
			{
				ths = row_head.getElementsByTagName('TH');
				
				theader = ths.item(0);
				if (theader)
				{
					theader.innerHTML = address_type_title[title_type];
				}
			}
		}
		
		if (shipping_address_instruction && shipping_address_instruction[title_type])
		{
			instruction_obj = get_obj('shipping_address_instruction');
			
			if (instruction_obj)
			{
				instruction_obj.innerHTML = shipping_address_instruction[title_type];
			}
		}
		
		if (atype == 2) 
		{
			try {
				obj_display('shipping_address_billing_data', 'table-row');
				obj_display('shipping_address_company', 'table-row');
			} catch(e) {
				obj_display('shipping_address_billing_data', '');
				obj_display('shipping_address_company', '');
			}
			obj_display('billing_profile_block_head', 'none');
			obj_display('billing_profile_block', 'none');
		}
		else
		{
			obj_display('shipping_address_billing_data', 'none');
			if (atype == 1)
			{
				obj_display('shipping_address_company', 'none');
			}
		}
		
		if (atype == 3) 
		{
			try {
				obj_display('billing_profile_block_head', 'table-row');
				obj_display('billing_profile_block', 'table-row');
				obj_display('shipping_address_company', 'table-row');
			} catch(e) {
				obj_display('billing_profile_block_head', '');
				obj_display('billing_profile_block', '');
				obj_display('shipping_address_company', '');
			}
			
			copy_shipping_to_billing();
		}
	}
}

function copy_shipping_to_billing()
{
	//a .. - dorucovaci => o - fakturacni
	copy_one_to_another('afirstname', 'o_firstname');
	copy_one_to_another('alastname', 'o_lastname');
	copy_one_to_another('company_name', 'o_company_name');
	copy_one_to_another('atin', 'tin');
	copy_one_to_another('acid', 'cid');
	copy_one_to_another('street', 'o_street');
	copy_one_to_another('city', 'o_city');
	copy_one_to_another('zip', 'o_zip');
	
}

var services=Object();
function show_service(delivery_id, delivery_method_id){
	if( !services[delivery_id] ){
		services[delivery_id]=Object();
	}else{
		for(dmethod_id in services[delivery_id]){
			services[delivery_id][dmethod_id].style.display='none';
		}
	}
	
	if( !services[delivery_id][delivery_method_id] ){
		services[delivery_id][delivery_method_id]=MM_findObj('services_'+delivery_id+'_'+delivery_method_id);
	}
	
	services[delivery_id][delivery_method_id].style.display='block';
	MM_findObj('displayed_delivery_'+delivery_id+'_method').value=delivery_method_id;
}



function set_deliver_together_fn(obj, chosen)
{
	inp = document.getElementById('set_deliver_together');
	if (!chosen && obj.form && inp)
	{
		inp.value = 1;
		obj.form.submit();
	}
}